215 A.3d 36
Pa.2019Background
- Defendant Leeton Jahwanza Thomas was convicted of two counts of first-degree murder and one count of attempted murder for killings on June 11, 2015; appeal to Pennsylvania Supreme Court followed.
- Victim-witness P.S. testified at trial; defense sought a competency hearing and evaluation after discovery showed developmental limitations and an educational record indicating an I.Q. of 46.
- Trial court conducted a competency colloquy (not a hearing or formal evaluation) and found P.S. competent to testify; defense objections and requests for broader inquiry were denied.
- Commonwealth introduced argument and testimony suggesting Thomas faced possible deportation if convicted on separate sexual-assault charges (arraignment scheduled after the murders), offered by prosecutor and a state police witness.
- Thomas challenged: the competency assessment/process for P.S.; exclusion of defense expert on eyewitness reliability; and admission of evidence/argument about immigration/deportation.
- Justice Wecht (concurring) agreed the conviction should be affirmed but expressed reservations about the competency inquiry’s adequacy and the admission of immigration-status evidence, concluding any errors were harmless given overwhelming other evidence (DNA, bloodhound tracking, physical items linking defendant to scene, motive and timing).
Issues
| Issue | Plaintiff's Argument | Defendant's Argument | Held |
|---|---|---|---|
| Competency procedure for witness P.S. — colloquy vs hearing | Trial court properly exercised discretion to use colloquy; no abuse | Thomas argued records (IQ 46, disabilities) required a competency hearing/evaluation | Court affirmed colloquy discretion; concurrence doubts adequacy but treats error as harmless |
| Adequacy of competency colloquy and ruling that P.S. was competent | Colloquy and court observations showed competency | Thomas argued colloquy was superficial, defense cross-exam. was unduly limited, so competency finding unreliable | Majority upheld; concurrence finds colloquy inadequate but harmless error given other evidence |
| Admission of immigration/deportation evidence as motive | Commonwealth: immigration status and possible deportation were probative of motive for murders | Thomas: evidence speculative and unduly prejudicial; should be excluded under Rule 403 | Majority allowed evidence as probative; concurrence finds admission an abuse of discretion but harmless error |
| Exclusion of defense expert on eyewitness reliability | Commonwealth/majority: not necessary or improperly proffered | Thomas: exclusion prevented expert reliability evidence for eyewitness ID | Majority opinion (joined by concurrence) upheld exclusion (concurrence joins relevant sections) |
Key Cases Cited
- Commonwealth v. Dowling, 883 A.2d 570 (Pa. 2005) (trial-court competency determinations reviewed for abuse of discretion)
- Commonwealth v. Delbridge, 855 A.2d 27 (Pa. 2004) (party challenging competency must prove incompetency by clear and convincing evidence)
- Commonwealth v. Ware, 329 A.2d 258 (Pa. 1974) (mental impairment alone does not establish incompetency)
- Commonwealth v. Anderson, 552 A.2d 1064 (Pa. Super. 1988) (competency standards for adult witnesses with childlike capacity)
- Rosche v. McCoy, 156 A.2d 307 (Pa. 1959) (factors for child-witness competency: communication, perception/memory, duty to tell truth)
- Commonwealth v. Penn, 439 A.2d 1154 (Pa. 1982) (same competency factors)
- Commonwealth v. Fultz, 462 A.2d 1340 (Pa. 1983) (competency considerations)
- Commonwealth v. Walter, 93 A.3d 442 (Pa. 2014) (trial court must make independent competency determination for witnesses under 14)
- Commonwealth v. Koehler, 737 A.2d 225 (Pa. 1999) (court may order competency hearing or investigation if judge has doubts after observation)
- Commonwealth v. Counterman, 719 A.2d 284 (Pa. 1998) (no automatic right to hearing; judge’s observation controls need for further inquiry)
- Commonwealth v. Mitchell, 902 A.2d 430 (Pa. 2006) (harmless-error standards and burden on Commonwealth)
- Commonwealth v. Robinson, 721 A.2d 344 (Pa. 1998) (harmless-error framework)
- Commonwealth v. Hackett, 99 A.3d 11 (Pa. 2014) (standards for intellectual disability in capital cases)
- Commonwealth v. Keaton, 45 A.3d 1050 (Pa. 2012) (interaction of intellectual functioning and adaptive skills)
- Commonwealth v. Williams, 61 A.3d 979 (Pa. 2013) (IQ ranges and mild intellectual disability)
- Commonwealth v. Mason, 130 A.3d 601 (Pa. 2015) (DSM/AAIDD standards referenced)
- Commonwealth v. Gibson, 925 A.2d 167 (Pa. 2007) (intellectual disability evidentiary standards)
- Commonwealth v. Philistin, 53 A.3d 1 (Pa. 2012) (immigration status can be relevant to motive)